<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>

  <style>
    .father {
      width: 200px;
      height: 200px;
      background-color: pink;
      margin-top: 20px;
    }

    .son {
      width: 100px;
      height: 100px;
      background-color: skyblue;
    }
  </style>

</head>

<body>

  <div id="app">
    <h3>v-model修饰符 .trim .number</h3>
    姓名：<input v-model.trim="username" type="text"><br>
    年纪：<input v-model.number="age" type="text"><br>


    <h3>@事件名.stop → 阻止冒泡</h3>
    <div @click="fatherFn" class="father">
      <div @click.stop="sonFn" class="son">儿子</div>
    </div>

    <h3>@事件名.prevent → 阻止默认行为</h3>
    <a @click.prevent href="http://www.baidu.com">阻止默认行为</a>
  </div>

  <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
  <script>
    const app = new Vue({
      el: '#app',
      data: {
        username: '',
        age: '',
      },
      methods: {
        fatherFn() {
          alert('老父亲被点击了')
        },
        sonFn(e) {
          // e.stopPropagation()
          alert('儿子被点击了')
        }
      }
    })
  </script>

</body>

</html>